Multilayer ceramic electronic component including an external electrode having a graphene platelet

ABSTRACT

A multilayer ceramic electronic component includes a ceramic body including a dielectric and an internal electrode, an electrode layer electrically connected to the internal electrode, and a conductive resin layer disposed on the electrode layer and including a conductive metal, a graphene platelet, and a base resin.

CROSS-REFERENCE TO RELATED APPLICATION(S)

This application is the continuation application of U.S. patentapplication Ser. No. 16/173,254 filed on Oct. 29, 2018, which claims thebenefit of priority to Korean Patent Application Nos. 10-2018-0025068filed on Mar. 2, 2018 and 10-2018-0053428 filed on May 10, 2018 in theKorean Intellectual Property Office, the disclosures of which areincorporated herein by references in their entirety.

BACKGROUND 1. Field

The present disclosure relates to an external electrode paste toimplement a multilayer ceramic electronic component having relativelylow equivalent series resistance and a multilayer ceramic electroniccomponent to which the external electrode paste is applied.

2. Description of Related Art

Among ceramic electronic components, a multilayer ceramic capacitorincludes a plurality of layered dielectric layers, internal electrodesfacing each other with the dielectric layer interposed therebetween, andexternal electrodes electrically connected to the internal electrodes.

Generally, the internal electrodes and external electrodes aremanufactured using a paste including a conductive metal powder.

A multilayer ceramic capacitor is widely used as a component of mobilecommunication devices such as computers, PDAs, cellular phones, and thelike, as a multilayer ceramic capacitor is small-sized, secures highcapacity, and is easily mounted.

As electronic products have recently been miniaturized andmultifunctionalized, a trend for chip components to also be miniaturizedand multifunctionalized has emerged. Accordingly, there is demand forsmall-sized, high capacity multilayer ceramic capacitors.

To implement excellent performance as above, it is necessary toconfigure resistance of a paste used in internal electrodes and externalelectrodes to be low.

Also, a multilayer ceramic capacitor has an equivalent series resistancecomponent and an equivalent series inductance component, along with acapacitance component, and the equivalent series resistance componentand equivalent series inductance component may inhibit functions of amultilayer ceramic capacitor.

Accordingly, there has been demand for a multilayer ceramic capacitorwith relatively low equivalent series resistance.

SUMMARY

An aspect of the present disclosure is to provide an external electrodepaste to implement a multilayer ceramic electronic component havingrelatively low equivalent series resistance and a multilayer ceramicelectronic component to which the external electrode paste is applied.

According to an aspect of the present disclosure, a multilayer ceramicelectronic component includes a ceramic body including a dielectric andan internal electrode, an electrode layer electrically connected to theinternal electrode, and a conductive resin layer disposed on theelectrode layer and including a conductive metal, a graphene platelet,and a base resin.

According to another aspect of the present disclosure, a multilayerceramic electronic component includes a ceramic body including adielectric layer and an internal electrode, an electrode layerelectrically connected to the internal electrode, and a conductive resinlayer disposed on the electrode layer and including a conductive metaland abase resin. When a Raman analysis of the conductive resin layer isperformed, two peaks are detected.

BRIEF DESCRIPTION OF DRAWINGS

The above and other aspects, features, and advantages of the presentdisclosure will be more clearly understood from the following detaileddescription, taken in conjunction with the accompanying drawings, inwhich:

FIG. 1 is a schematic perspective view of a multilayer ceramic capacitoraccording to an exemplary embodiment in the present disclosure;

FIG. 2 is a cross-sectional view taken along line A-A′ in FIG. 1;

FIG. 3 is a magnified view of area P in FIG. 2;

FIG. 4 is a magnified view of a graphene platelet;

FIG. 5 is a graph illustrating a result of nuclear magnetic resonance(NMR) analysis of an external electrode paste including a grapheneplatelet according to an exemplary embodiment; and

FIG. 6 is a graph illustrating a result of Raman analysis of aconductive resin layer including a graphene platelet according to anexemplary embodiment.

DETAILED DESCRIPTION

Hereinafter, embodiments of the present disclosure will be described asfollows with reference to the attached drawings.

The present disclosure may, however, be exemplified in many differentforms and should not be construed as being limited to the specificembodiments set forth herein. Rather, these embodiments are provided sothat this disclosure will be thorough and complete, and will fullyconvey the scope of the disclosure to those skilled in the art.Accordingly, shapes and sizes of elements in the drawings can beexaggerated for clear description, and the elements indicated by thesame reference numeral are same elements in the drawings.

FIG. 1 is a schematic perspective view of a multilayer ceramic capacitoraccording to an exemplary embodiment in the present disclosure.

FIG. 2 is a cross-sectional view taken along line A-A′ in FIG. 1.

FIG. 3 is a magnified view of area P in FIG. 2.

Referring to FIGS. 1, 2 and 3, a multilayer ceramic electronic component100 according to an exemplary embodiment may comprise a ceramic body 110including a dielectric layer 111 and internal electrodes 121 and 122,electrode layers 131A and 131B connected to the internal electrodes 121and 122, conductive resin layers 132A and 132B formed on the electrodelayers 131A and 131B and including a conductive metal 32A, a grapheneplatelet 32B and a base resin 32C.

Specifically, the multilayer ceramic electronic component 100 mayinclude the ceramic body 110 including the dielectric layer 111, firstand second internal electrodes 121 and 122 configured to face each otherwith the dielectric layer 111 interposed therebetween in the ceramicbody 110, the first electrode layer 131A configured to be electricallyconnected to the first internal electrode 121 and the second electrodelayer 131B configured to be electrically connected to the secondinternal electrode 122, and the first conductive resin layer 132A formedon the first electrode layer 131A and the second conductive resin layer132B formed on the second electrode layer 131B. The first conductiveresin layer 132A and the second conductive resin layer 132B may includethe conductive metal 32A, the graphene platelet 32B, and the base resin32C.

The first and second conductive resin layers 132A and 132B may be formedby applying an external electrode paste including the conductive metal32A powder, the graphene platelet 32B and the base resin 32C, and eachof the first and second conductive resin layers 132A and 132B mayinclude 5-30 parts by weight of base resin (3), and 0.5-5 parts byweight of graphene platelet (1) based on 100 parts by weight ofconductive metal (2) powder.

The first and second conductive resin layers 132A and 132B may be formedby applying an external electrode paste in accordance with the exemplaryembodiment, and thus will be described in the description below.

The base resin 32C may be implemented by a material which has adhesiveproperties and shock absorption properties and is able to form a pastewhen mixed with the conductive metal 32A, but is not limited thereto.For example, the base resin 32C may include epoxy resin.

In the case in which the content of the base resin 32C is less than 5parts by weight, it may be difficult to manufacture a paste due to ashortage of resin and a decrease in phase stability, which may lead tophase separation or a change in viscosity, and the dispersibility ofmetal may also be degraded, which may cause a decrease in a filling rateand a degradation of density. In the case in which the content of baseresin 32C exceeds 30 parts by weight, the contact between metals maydegrade due to excessive resin content, which may increase resistivityand the resin area of the surface, and accordingly, in the case in whicha plating layer is formed after the first and second conductive resinlayers 132A and 132B are formed, there may be a problem of platinglessdefects.

Generally, in the case in which a conductive resin layer is disposed onan external electrode of a multilayer ceramic capacitor, the conductiveresin layer may be configured to cover the whole electrode layerconnected to an internal electrode, and current may flow through theconductive resin layer for electric conduction with outside.

The conductive resin layer may be formed with a conductive metal forsecuring electric conductivity and a base resin for shock absorption. Inthe case in which the conductive resin layer includes a base resin,durability against external stimuli such as bending of a multilayerceramic electronic component may improve, but resistivity may becomehigh compared to an electrode which does not include a base resin, andaccordingly, equivalent series resistance of a multilayer ceramicelectronic component may increase.

However, according to an exemplary embodiment, as the first and secondconductive resin layers 132A and 132B include the graphene platelet 32Bin addition to the conductive metal 32A powder and the base resin 32C,durability against external stimuli such as bending of a multilayerceramic electronic component may improve, and further, the grapheneplatelet may address the problem of increase of equivalent seriesresistance of a multilayer ceramic electronic component caused by thebase resin, thereby decreasing equivalent series resistance.

According to an exemplary embodiment, as the first and second conductiveresin layers 132A and 132B further include the graphene platelet 32B,conductivity may improve 1,000-100,000 times compared to a conventionalexternal electrode, and equivalent series resistance of a multilayerceramic capacitor may decrease by 30% compared to the prior art.

Specifically, as the first and second conductive resin layers 132A and132B includes between 0.5 and 7.5 parts by weight of the grapheneplatelet 32B based on 100 parts by weight of the conductive metal powder32A, equivalent series resistance of the multilayer ceramic capacitoraccording to the exemplary embodiment may be lowered.

In the case in which the content of the graphene platelet 32B is lessthan 0.5 part by weight, it may be impossible to implement themultilayer ceramic electronic component having relatively low equivalentseries resistance, and in the case in which the content exceeds 7.5parts by weight, the platingless defects or a reduction of adhesivestrength may occur when a plating layer is formed on an upper portion ofthe first and second conductive resin layers 132A and 132B.

In the case in which the content of graphene platelet 32 b above isrepresented as the content to be included in the external electrodepaste, it may be within a range from 0.4 wt % to 6.0 wt %. In the casein which the content is less than 0.4 wt %, it may be impossible toimplement the multilayer ceramic electronic component with relativelylow equivalent series resistance, and in the case in which the contentexceeds 6.0 wt %, the platingless defect or a reduction of adhesivestrength may occur when a plating layer is formed on an upper portion ofthe first and second conductive resin layers 132A and 132B.

In the case in which the content of the graphene platelet 32B exceeds6.0 wt %, the viscosity may increase for the shortage of resin in thefirst and second conductive resin layers 132A and 132B, and accordingly,when the paste to form a conductive resin layer is coated on theexternal surface of the body, the corner of the external electrode maybecome thinner, which may cause a deterioration in moisture resistanceproperties and the problem of decline in reliability.

The graphene platelet 32B may be included in the first and secondconductive resin layers 132A and 132B in a content of 2.5 to 2.9 partsby weight based on 100 parts by weight of the conductive metal powder32A.

In the case in which the content of the graphene platelet 32B is 2.5 to2.9 parts by weight based on 100 parts by weight of the conductive metalpowder 32A, the conductivity of the external electrode may improve, andthe effect of reducing equivalent series resistance of the multilayerceramic electronic component may further improve.

Referring to FIG. 3, in the conductive resin layers 31B and 32B, thegraphene platelet 32B may be dispersed in the base resin 32C and beabsorbed on the surface of the conductive metal 32A.

As the graphene platelet 32B may be evenly dispersed in the base resin32C, and in the conductive resin layers 132A and 132B, the increase ofequivalent series resistance of the multilayer ceramic electroniccomponent, caused by the base resin 32C, may be offset.

Specifically, by dispersing the graphene platelet 32B having lowresistivity and excellent electric conductivity in the base resin 32C,equivalent series resistance of the multilayer ceramic electroniccomponent may be decreased.

Also, in the conductive resin layers 132A and 132B, the grapheneplatelet 32B is dispersed in planar form.

As the graphene platelet 32B is dispersed in plate form in theconductive resin layers 132A and 132B, the specific surface area may belarge, and the effect of reduction in equivalent series resistance ofthe multilayer ceramic electronic component may be further improvedaccordingly.

To address the problem of an increase of equivalent series resistance ofa multilayer ceramic electronic component caused by a conductive resinlayer included in an external electrode, there has been an attempt toinclude a carbon nanotube (CNT) in a conductive resin layer.

The carbon nanotube is manufactured to include at least one of asingle-walled carbon nanotube and a multi walled carbon nanotube.

However, the carbon nanotube has a columnar shape, the inside of whichis filled or hollow, or has a pipe shape in which a passage is formed.Accordingly, in the case in which the content of a carbon nanotube isnot higher than a certain level, the effect of a reduction in equivalentseries resistance of a multilayer ceramic electronic component may beinsufficient.

Also, to help the contacting and tunneling between metals in theconductive resin layers, a dispersion of the external electrode pastemay be required.

However, in the case in which the content of a carbon nanotube is toohigh, to increase the effect of reduction of equivalent seriesresistance of a multilayer ceramic electronic component, there may be aproblem in dispersion of a carbon nanotube in the external electrodepaste.

Also, in the case in which the content of a carbon nanotube is too high,there may be a problem of a platingless defect or reduction of adhesivestrength may occur when a plating layer is formed on an upper portion ofa conductive resin layer.

Also, in the case in which the content of a carbon nanotube is too high,the content of base resin contained in the conductive resin layer may berelatively low, and accordingly, the effect of a reduction in shockabsorption by elasticity of a conductive resin layer may not beobtained.

However, according to an exemplary embodiment, by including the planargraphene platelet 32B having a large specific surface area in the firstand second conductive resin layers 132A and 132B, the effect ofreduction of equivalent series resistance of a multilayer ceramicelectronic component may be excellent.

In other words, as the graphene platelet 32B according to an exemplaryembodiment may have a planar shape and have a large specific surfacearea, the effect of reduction of equivalent series resistance of amultilayer ceramic electronic component may be excellent with only smallcontent of the graphene platelet 32B.

Also, as the graphene platelet 32B has electric property with only smallcontent thereof compared to a carbon nanotube, the graphene platelet maybe dispersed evenly when external electrode paste is manufactured, andaccordingly, reliability may become excellent.

Also, as the first and second conductive resin layers 132A and 132Bcontain a certain range of content of the graphene platelet 32B, theproblem of a platingless defect or a reduction of adhesive strength maynot occur when a plating layer is formed on the upper portion.

Also, even in the case in which the first and second conductive resinlayers 132A and 132B contain low content of the graphene platelet 32B,the effect of reduction in equivalent series resistance of a multilayerceramic electronic component may be obtained. Accordingly, the contentof base resin may be similar to that of the prior art, and the effect ofshock absorption by elasticity of a conductive resin layer may beobtained similarly to the prior art.

The length of a major axis of the graphene platelet 32B may range from0.2 nm to 10 μm, and the length of minor axis may range from 0.2 nm to10 μm, but are not limited thereto.

According to an exemplary embodiment, at least one or more of thegraphene platelets 32B may be disposed within the area of 1 μm×1 μm inthe first and second conductive resin layers 132A and 132B.

The measuring of the graphene platelet 32B may not be limited. Forexample, the graphene platelet 32B may be measured within the area of 1μm×1 μm in the first and second conductive resin layers 132A and 132B.

For example, the graphene platelet 32B within the area of 1 μm×1 μm inthe first and second conductive resin layers 132A and 132B may bemeasured by scanning a cross section of the multilayer ceramic capacitorin a length-width direction with a transmission electron microscope(TEM).

Specifically, a 1 μm×1 μm area of the first and second conductive resinlayers 132A and 132B may be measured using a transmission electronmicroscope in the area of the first and second conductive resin layers132A and 132B extracted from the image of the cross section of a lengthand width direction (L-T), created by cutting the center of themultilayer ceramic capacitor in the width (W) direction.

FIG. 4 is a magnified view of a graphene platelet in the presentdisclosure.

Referring to FIG. 4, the graphene platelet 32B may include a pluralityof layered planar structures.

As the graphene platelet 32B includes a plurality of layered planarstructures, the specific surface area of each of the planar structuresmay be large, and accordingly, the effect of a reduction of equivalentseries resistance may be excellent with only small content of thegraphene platelet.

In other words, the graphene platelet 32B having low resistivity andexcellent electric conductivity has a planar structure with a largespecific surface area, and as the plurality of planar structures arelayered, the effect of reduction of equivalent series resistance of amultilayer ceramic electronic component may be excellent.

Also, even in the case in which the first and second conductive resinlayers 132A and 132B contain low content of the graphene platelet 32B,the effect of reduction of equivalent series resistance of a multilayerceramic electronic component may be obtained. Accordingly, the contentof base resin may be similar to that of the prior art, and the effect ofreduction of shock absorption by elasticity of a conductive resin layermay be obtained similarly to the prior art.

The conductive metal 32A may be one or more material selected from thegroup consisting of copper (Cu), nickel (Ni), silver (Ag), andsilver-palladium (Ag—Pd), but is not limited thereto.

The material forming the dielectric layer 111 may not be particularlylimited as long as sufficient capacitance is able to be obtainedtherewith. For example, the material may be barium titanate (BaTiO₃).Also, as the material composing the dielectric layer 111, variousceramic additives, organic solvents, coupling agents, dispersing agents,and the like, may be added in addition to barium titanate (BaTiO₃)powder, or the like.

The material composing the first and second internal electrodes 121 and122 may not be limited. For example, the material may include one ormore of silver (Ag), lead (Pb), platinum (Pt), nickel (Ni), and copper(Cu).

The first and second electrode layers 132A and 132B may be directlyconnected to the first and second internal electrodes 121 and 122 andsecure electric conduction between the first and second externalelectrodes 130A and 130B and the first and second internal electrodes121 and 122.

The first and second electrode layers 131A and 131B may includeconductive metal, and the conductive metal may be nickel (Ni), copper(Cu), palladium (Pd) or gold (Au), or alloy thereof, but is not limitedthereto.

The first and second electrode layers 131A and 131B may be sinteredelectrodes formed by sintering of a paste including conductive metal.

A plating layer (not illustrated) may be formed on the first and secondconductive resin layers 132A and 132B. The plating layer may include anickel-plated layer and a tin-plated layer, and the nickel-plated layermay be disposed on the first and second conductive resin layers 132A and132B, and the tin-plated layer may be disposed on the nickel-platedlayer.

Table 1 below shows the result of evaluation of resistivity after curinga sheet on which a paste is coated, and equivalent series resistance ofa multilayer ceramic capacitor in which the resistivity is appliedaccording to an embodiment in which the graphene platelet 32B isincluded and a comparative example in which the graphene platelet 32B isnot included while changing the content of epoxy resin that is the baseresin 32C included in the first and second conductive resin layers 132Aand 132B of the multilayer ceramic capacitor.

The first and second conductive resin layers 132A and 132B may include70 wt % to 80 wt % of copper (Cu) as the conductive metal 32A accordingto the comparative examples and embodiment.

The above comparative example does not include a graphene platelet, andthe content of epoxy resin may be 11 wt %.

The embodiment may include 2 wt % of the graphene platelet 32B, and thecontent of epoxy resin in the embodiments 1, 2, and 3 may be 11 wt %, 13wt %, and 15 wt %, respectively.

The multilayer ceramic capacitor may be manufactured to have ‘3216’ size(length×width being 3.2 mm×1.6 mm) according to the comparative examplesand embodiment, and Table 1 shows the result of an average value andstandard deviation of equivalent series resistance of the multilayerceramic capacitor.

TABLE 1 Standard Resistivity of Average of deviation of cured sheetequivalent series equivalent series (Ω*cm) resistance (mΩ) resistanceComparative 2.4412E+05 8.66 2.11 example Embodiment 1 7.3500E+02 5.960.55 Embodiment 2 5.2829E+00 5.85 0.42 Embodiment 3 1.2008E+01 6.36 0.39

Referring to Table 1, the resistivity value after curing of a sheetcoated with an external electrode epoxy paste, the sheet beingmanufactured on the basis of embodiments 1, 2, and 3 that include thegraphene platelet 32B, turned out to be lower than the resistivity valuein the comparative examples of the prior art which does not include agraphene platelet.

Also, referring to Table 1, in the case of embodiments 1, 2, and 3including the graphene platelet 32B, the equivalent series resistancevalue of a multilayer ceramic capacitor reduced by 30% compared to theprior art which does not include a graphene platelet.

Further, in the case of embodiments 1, 2, and 3 including the grapheneplatelet 32B, the standard deviation of equivalent series resistancevalue of a multilayer ceramic capacitor is lower than that of the priorart which does not include a graphene platelet, and accordingly, amultilayer ceramic capacitor having more even electric properties may beimplemented.

The multilayer ceramic electrical component may be manufactured as belowaccording to an exemplary embodiment.

The dielectric layer 111 may be formed of a plurality of ceramic greensheets formed by coating a carrier film with slurry including a powderof a material such as barium titanate (BaTiO₃), or the like, and drying.

The ceramic green sheet may be manufactured by a slurry formed by mixingceramic powder, binder, and solvent, and manufacturing the slurry as aform of sheet having a thickness of a certain μm by a doctor blademethod.

Then, a conductive paste for an internal electrode including nickelpowder may be manufactured.

The ceramic body 110 may be manufactured by, after forming an internallayer by coating the green sheet with the conductive paste for internalelectrode by a screen printing process, layering the green sheets onwhich an internal electrode is printed in multiple layers and layeringthe green sheets on which an internal electrode is not printed on upperand lower surfaces of the laminate in multiple layers, and beingsintered.

The internal electrode may be formed as the first and second internalelectrodes.

The first and second electrode layers 131A and 131B may be formed on theexternal surface of the ceramic body to be connected to the first andsecond internal electrodes, respectively. The first and second electrodelayers may be formed by sintering of the paste including a conductivemetal and glass.

A type of the conductive metal may not be limited. For example, theconductive metal may be one or more material selected from the groupconsisting of copper (Cu), silver (Ag), and nickel (Ni), and alloythereof, and it may be appropriate to include copper (Cu).

The type of glass may also not be limited, and a material having thesame component as that of glass used in manufacturing of an externalelectrode of a general multilayer ceramic capacitor may be used.

The first and second conductive resin layers 132A and 132B may be formedby coating the external surface of the first and second electrode layers131A and 131B with conductive resin composition including copper. Theconductive resin component may include the conductive metal 32A powderincluding copper and the base resin 32C, and the base resin may be epoxyresin that is a thermosetting resin.

According to an exemplary embodiment, the first and second conductiveresin layers 132A and 132B may include 0.5 to 7.5 parts by weight of thegraphene platelet 32B based on 100 parts by weight of the conductivemetal 32A powder.

As the first and second conductive resin layers 132A and 132B include0.5 to 7.5 parts by weight of the graphene platelet 32B based on 100parts by weight of the conductive metal 32A powder, equivalent seriesresistance of the multilayer ceramic capacitor according to theexemplary embodiment may be lowered.

Preferably, 2.5 to 2.9 parts by weight of the graphene platelet 32B maybe included in the first and second conductive resin layers 132A and132B based on 100 parts by weight of the conductive metal 32A powder.

In the case in which the content of the graphene platelet 32B is 2.5 to2.9 parts by weight based on 100 parts by weight of the conductive metal32A powder, conductivity of an external electrode may improve, and theeffect of reduction of equivalent series resistance of the multilayerceramic electronic component may become more excellent.

The method may further include forming a nickel plated layer and a tinplated layer after forming the first and second conductive resin layers132A and 132B.

FIG. 5 is a graph illustrating a result of nuclear magnetic resonance(NMR) analysis of an external electrode paste including a grapheneplatelet according to an exemplary embodiment.

Referring to FIG. 5, in the case in which a nuclear magnetic resonance(NMR) analysis of an external electrode paste including a grapheneplatelet may be carried out according to the exemplary embodiment, apeak (a) by sp² carbon may be detected.

The peak (a) by sp² carbon may also be detected in the analysis of anexternal electrode of a multilayer ceramic capacitor in which theexternal electrode paste including a graphene platelet is appliedaccording to the exemplary embodiment.

FIG. 6 is a graph illustrating a Raman analysis result of a conductiveresin layer including a graphene platelet according to an exemplaryembodiment.

Referring to FIG. 6, the multilayer ceramic electronic component 100according to another exemplary embodiment may include the ceramic body110 including the dielectric layer 111 and the internal electrodes 121and 122, the electrode layers 131A and 131B connected to the internalelectrodes 121 and 122, and the conductive resin layers 132A and 132Bformed on the electrode layers 131A and 131B and including a conductivemetal and a base resin, and when a Raman analysis is performed to theconductive resin layers 132A and 132B, two peaks may be detected.

As illustrated in the Raman analysis graph in FIG. 6, embodiments 1, 2,and 3 may be samples of exemplary embodiment, and two peaks may bedetected. Comparative example 1 may be a graph of a Raman analysis ofgraphite, and only one peak may be detected.

According to another exemplary embodiment, the two peaks may be detectedin a D band and a G band.

Also, in comparative example 1, only one peak may be detected in the Gband.

According to another exemplary embodiment, the conductive resin layers132A and 132B may include a graphene platelet.

When a Raman analysis of the conductive resin layers 132A and 132B arecarried out, the two peaks may be detected because the conductive resinlayers 132A and 132B include a graphene platelet. A Raman analysis graphof other carbon material may appear differently.

According to an aspect of the present disclosure, a multilayer ceramicelectronic component having relatively low equivalent series resistancemay be implemented by including a graphene platelet having lowresistance in the external electrode paste.

While the exemplary embodiments have been shown and described above, itwill be apparent to those skilled in the art that modifications andvariations could be made without departing from the scope of the presentinvention as defined by the appended claims.

What is claimed is:
 1. A multilayer ceramic electronic componentcomprising: a ceramic body including a dielectric layer and an internalelectrode; an electrode layer electrically connected to the internalelectrode; a conductive resin layer disposed on the electrode layer andincluding a conductive metal, a graphene platelet, and a base resin; anickel-plated layer disposed on the conductive resin layer; and atin-plated layer disposed on the nickel-plated layer wherein thegraphene platelet has a planar shape, and wherein the graphene plateletincludes a plurality of layered planar structures.
 2. The multilayerceramic electronic component of claim 1, wherein a length of thegraphene platelet along a major axis is within a range from 0.2 nm to 10μm.
 3. The multilayer ceramic electronic component of claim 1, wherein alength of the graphene platelet along a minor axis is within a rangefrom 0.2 nm to 10 μm.
 4. The multilayer ceramic electronic component ofclaim 1, wherein the conductive resin layer is formed of a pasteincluding the graphene platelet and a conductive metal, and a content ofthe graphene platelet in the paste is within a range from 0.5 to 7.5parts by weight, based on 100 parts by weight of the conductive metal.5. The multilayer ceramic electronic component of claim 1, wherein theconductive resin layer includes a plurality of the graphene platelets,and, in a cross section in a length and width direction, at least one ofthe graphene platelets is disposed within an area of 1 μm X 1 μm in theconductive resin layer.
 6. The multilayer ceramic electronic componentof claim 5, wherein the graphene platelets are evenly dispersed in theconductive resin layer.
 7. A multilayer ceramic electronic componentcomprising: a ceramic body including a dielectric layer and an internalelectrode; an electrode layer electrically connected to the internalelectrode; a conductive resin layer disposed on the electrode layer andincluding a conductive metal and a base resin; a nickel-plated layerdisposed on the conductive resin layer; and a tin-plated layer disposedon the nickel-plated layer, wherein two peaks are detected when a Ramananalysis of the conductive resin layer is performed, wherein theconductive resin layer comprises a graphene platelet, wherein thegraphene platelet has a planar shape, and wherein the graphene plateletincludes a plurality of layered planar structures.
 8. The multilayerceramic electronic component of claim 7, wherein a first peak of the twopeaks is detected in a D band, and a second peak of the two peaks isdetected in a G band.
 9. The multilayer ceramic electronic component ofclaim 7, wherein a length of the graphene platelet along a major axis iswithin a range from 0.2 nm to 10 μm.
 10. The multilayer ceramicelectronic component of claim 7, wherein a length of the grapheneplatelet along a minor axis is within a range from 0.2 nm to 10 μm. 11.The multilayer ceramic electronic component of claim 7, wherein theconductive resin layer is formed of a paste including the grapheneplatelet and a conductive metal, and a content of the graphene plateletin the paste is within a range from 0.5 to 7.5 parts by weight, based on100 parts by weight of the conductive metal.
 12. The multilayer ceramicelectronic component of claim 7, wherein the conductive resin layerincludes a plurality of the graphene platelets, and wherein a density ofthe graphene platelets in the conductive resin layer is greater than orequal to one graphene platelet per cubic μm of the conductive resinlayer.
 13. The multilayer ceramic electronic component of claim 12,wherein the graphene platelets are evenly dispersed in the conductiveresin layer.